Tag: M.W=100-200

Related Products of 658-99-1, These common heterocyclic compound, 658-99-1, name is 2-(3,4-Difluorophenyl)acetonitrile, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

Example S23; Preparation of 2-(3,4-difluoro-phenyl)-ethylamine hydrochloride; To 3.71 g of LiAlH4 (98 mmol) in 30 ml of dry diethylether were added dropwise at 0 C. under nitrogen 5 g of 3,4-difluoroacetonitrile (33 mmol) in 30 ml THF. After the addition and additional 15 min of stirring at 0 C., the ice bath was removed and the reaction was allowed to warm to ambient temperature. The flask was then immersed in an oil bath, heated to 55 C. and the reaction was refluxed overnight. The oil bath was then removed and the reaction mixture cooled to 0 C. The LiAlH4 was then quenched by the slow and sequential addition of saturated aqueous sodium sulfate solution. After the initial exothermic reaction had subsided, the flask was allowed to warm to ambient temperature and further sodium sulfate solution was added until the color was light grey. Then more solid sodium sulfate (dry) was added to dry the mixture, which was subsequently filtered through a short bed of sodium sulfate in a sinter funnel. To the filtrate was added a 5 N HCl solution in dioxane. The HCl-salt precipitated out and was filtered. The collected yellow solid (4.2 g; 82% yield) was found to be of good purity by NMR and was taken into the next step without further purification. MS (ISP) 158.1 (M+H)+.

The synthetic route of 658-99-1 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Conte-Mayweg, Aurelia; Kuehne, Holger; Luebbers, Thomas; Maugeais, Cyrille; Mueller, Werner; Pflieger, Philippe; US2006/30613; (2006); A1;,
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Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 25808-30-4, name is 2-(Methylamino)acetonitrile hydrochloride, A new synthetic method of this compound is introduced below., Application In Synthesis of 2-(Methylamino)acetonitrile hydrochloride

General procedure: A dry one neck 50mL round bottom flask equipped with magnetic stirring, reflux condenser, and nitrogen atmosphere (or drying tube) was charged with the vinamidinium salt (3.30 mmol), methylaminoacetonitrile hydrochloride (0.355 g, 3.33mmol) and triethylamine (0.97 mL, 6.95 mmol).Anhydrous acetonitrile (10 mL) was added and the mixture was allowed to stir at reflux overnight. The flask wascooled to room temperature and the volatiles were removed in vacuo. The remainingsolid was partitioned between water and ethyl acetate. The ethyl acetate layer was dried over sodiumsulfate and concentrated in vacuo togive the crude solid.

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Article; Smith, Stanton Q.; Dudek, Sean T.; He, Shu-Hui; Girod, Jarod A.; Nunes, Shane R.; Tetrahedron Letters; vol. 54; 30; (2013); p. 3965 – 3966;,
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Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 7357-70-2, name is 2-Cyanothioacetamide, A new synthetic method of this compound is introduced below., SDS of cas: 7357-70-2

12.46 g (75 mmol) of 4-(2-hydroxyethoxy)benzaldehyde, 15.02 g (150 mmol) of cyanothioacetamide and 15.15 g (150 mmol) of N-methylmorpholine are initially charged in 75 ml of ethanol and heated under reflux for 3 h. After cooling, the reaction solution is concentrated under reduced pressure. The residue is dissolved in IN aqueous sodium hydroxide solution and washed twice with ethyl acetate. The aqueous sodium hydroxide phase is acidified with IN hydrochloric acid and the precipitated crystals are filtered off with suction and dried under reduced pressure at 450C. This gives 12.05 g (51% of theory) of product.MS (ESIpos): m/z = 313 (M+H)+, 330 (M+NH^1H=NMR (300 MHz, DMSO-d*): delta = 3.7 (t, 2H); 4.1 (t, 2H); 7.1 (d, 2H); 7.4 (d, 2H); 8.0 (br s, 2H).

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; BAYER HEALTHCARE AG; WO2007/73855; (2007); A1;,
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Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 145689-34-5, name is 2-(2,3-Difluorophenyl)acetonitrile, This compound has unique chemical properties. The synthetic route is as follows., SDS of cas: 145689-34-5

Example 1.2 (6S .V (6?8.S)-6-(2,3-Difluo^ <3]pyridin-8-yl]-2l-oxo 25j etrahy ft]pyr idine] -3 -carb xamide Step A: Methyl 2-[(feA-f-butoxycarbonyl)aminol-4-cyano-4-(2,3-difluorophenyl)butanoate To a solution of (2,3-difluorophenyl)acetonitrile (18.6 g, 122 mmol) ?eta Nu,Nu- dimethylformamide (243 mL) at 0 C was added sodium hydride (60% dispersion in mineral oil) (4.37 g, 109 mmol). After 20 min, methyl N~(tert~butoxycarbonyl)~3~iodo-Z)-alaninate (20.0 g, 60.8 mmol) was added, and the resulting mixture stirred 50 min. Saturated aqueous sodium bicarbonate was added, and the mixture was warmed to ambient temperature. Water was added and the mixture was extracted with ethyl acetate (3 ). The combined organic extracts were washed with water (3x), brine, dried over magnesium sulfate, filtered and concentrated. Purification by silica gel chromatography (100% hexanes? 20% hexanes/ ethyl acetate) gave the title compound (12.0 g). MS 377.3 (M+Na), Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 145689-34-5. Reference:
Patent; MERCK SHARP & DOHME CORP.; BURGEY, Christopher, S.; GINNETTI, Anthony; NOMLAND, Ashley; PAONE, Daniel, V.; WO2013/66360; (2013); A1;,
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Adding a certain compound to certain chemical reactions, such as: 2042-37-7, name is 2-Bromobenzonitrile, belongs to nitriles-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 2042-37-7, category: nitriles-buliding-blocks

General procedure: In an undivided cellequipped with a Zn sacrificial anode (1.5 x 1.0 cm2) and a Pt cathode (1.5 x 1.0 cm2) was placed a DMF(3 mL) solution of 4-bromopropiophenone (4a, 0.053 g, 0.25 mmol), 1 (0.14 g, 7.6 x 10-2 mmol),[Bu4N+][Tf2N-] (0.16 g, 0.30 mmol), and a catalytic amount of PdCl2(PPh3)2 (0.0086 g, 1.2 x 10-2 mmol).The solution was electrolyzed under constant current conditions (10 mA) at 60 C until 2 F/mol-4a ofelectricity was passed. The reaction mixture was poured into 5% aq. HCl (12 mL). The mixture wasextracted with AcOEt (10 mL x 3). The combined organic layer was washed successively with waterand brine, dried (Na2SO4), and concentrated under reduced pressure. The residue was purified bycolumn chromatography (SiO2, toluene/AcOEt = 10/1) to afford 4,4?-dipropanoylbiphenyl (5a, 0.030 g,0.11 mmol, 89%).

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it.

Reference:
Article; Kuroboshi, Manabu; Kojima, Atsuki; Tanaka, Hideo; Heterocycles; vol. 94; 11; (2017); p. 2132 – 2140;,
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Synthetic Route of 7153-22-2,Some common heterocyclic compound, 7153-22-2, name is Ethyl 4-cyanobenzoate, molecular formula is C10H9NO2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

General procedure: To a solution of hydroxylammonium chloride (1 eq.) in absolute ethanol (0.75 M) triethylamine (1 eq.) and starting compound (21 or 22) were added. The resulting solution was stirred at 60 C for 15 h. The solvent was removed under reduced pressure and residue dissolved in EtOAc, which was further washed with saturated solution of NaHCO3 and brine. The organic phase was dried over Na2SO4, filtered and concentrated under reduced pressure to give product 23 or 24.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route Ethyl 4-cyanobenzoate, its application will become more common.

Reference:
Article; Trstenjak, Uro?; Ila?, Janez; Kikelj, Danijel; European Journal of Medicinal Chemistry; vol. 64; (2013); p. 302 – 313;,
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Electric Literature of 1080-74-6, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 1080-74-6, name is 2-(3-Oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile belongs to nitriles-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

To a degassed solution of compound 10-5 (150 mg, 0.1 1 mmol) and pyridine (0.6 cm3) in anhydrous chloroform (40 cm3) at 0 C was added a degassed solution of 2-(3-oxo-indan-1 -ylidene)-malononitrile (86 mg, 0.440 mmol) in anhydrous chlorofornn (8 cm3). The resulting solution was then degassed for a further 30 minutes. The ice bath was removed and the reaction mixture warmed to 23 C and stirred for 18 hours. The reaction mixture was diluted with acetonitrile (150 cm3) and stirred for 1 hour. The solid collected by filtration and washed with acetonitrile (100 cm3) and methanol (100 cm3). The crude was then purified by column chromatography (dichloromethane) followed by trituration in acetonitrile (100 cm3) to give compound 1 1 (183 mg, 97%) as a dark green solid. 1H- NMR (400 MHz, CD2CI2) 0.67 – 0.80 (24H, m), 1.1 1 – 1.23 (48H, m), 1.36 – 1.55 (16H, m), 2.43 (16H, t, J 7.7), 6.78 – 6.92 (12H, m), 7.63 – 7.74 (4H, m), 7.78 – 7.87 (4H, m), 8.60 (2H, d, J 7.3), 8.80 (2H, s).

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 2-(3-Oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; MERCK PATENT GMBH; MORSE, Graham; HEARD, Kane; MITCHELL, William; KROMPIEC, Michal; D’LAVARI, Mansoor; PRON, Agnieszka; (260 pag.)WO2019/52935; (2019); A1;,
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Electric Literature of 63069-50-1, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 63069-50-1, name is 4-Amino-3-fluorobenzonitrile, This compound has unique chemical properties. The synthetic route is as follows.

(3) In the same manner as that described in Example 3(4), a reaction was carried out using 4-amino-3-fluorobenzonitrile (129 mg, 0.95 mmol), obtained in Example 25(2), trimethylaluminium (0.89 ml, 1.07M n-hexane solution, 0.95 mmol) and methyl 4-[(trans-5-[[(1R,2R)-2-(2,4-difluorophenyl)-2-hydroxy-1-methyl-3-(1H-1,2,4-triazol-1-yl)propyl]thio]-1,3-dioxan-2-yl]benzoate (120 mg, 0.24 mmol), obtained in Example 12 (1), and the reaction mixture was treated using a similar procedure to that described in Example 3(4) to afford the title compound (134 mg, yield 92%) as a white solid which was recrystallized from ethyl acetate-hexane to give white powdery crystals. Melting point: 136 C. NMR spectrum (500 MHz, CDCl3) delta ppm: 1.22 (3H, d, J=7 Hz), 3.36 (1H, q, J=7 Hz), 3.4-3.6 (1H, m), 3.76 (1H, t, J=11 Hz), 3.79 (1H, t, J=11 Hz), 4.42 (1H, ddd, J=11, 5, 2 Hz), 4.55 (1H, ddd, J=11, 5, 2 Hz), 4.85 (1H, d, J=14 Hz), 5.05 (1H, d, J=14 Hz), 5.05 (1H, s), 5.55 (1H, s), 6.7-6.8 (2H, m), 7.3-7.4 (1H, m), 7.45 (1H, d, J=12 Hz), 7.53 (1H, d, J=8 Hz), 7.66 (2H, d, J=8 Hz), 7.79 (2H, s), 7.91 (2H, d, J=8 Hz), 8.22 (1H, bd, J=4 Hz), 8.73 (1H, t, J=8 Hz). IR spectrum: nu max (KBr) cm-1: 3435, 2232, 1686, 1520, 1139. Mass spectrum m/z (FAB): 610 (M++1).

The chemical industry reduces the impact on the environment during synthesis 4-Amino-3-fluorobenzonitrile. I believe this compound will play a more active role in future production and life.

Reference:
Patent; SANKYO COMPANY, LIMITED; US2003/176480; (2003); A1;,
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Adding a certain compound to certain chemical reactions, such as: 939-83-3, name is 2-Methyl-5-nitrobenzonitrile, belongs to nitriles-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 939-83-3, Computed Properties of C8H6N2O2

A mixture of 2-cyano-4-nitrotoluene (10 g, 6.17 mmol), benzaldehyde (6.51 g, 6.17 mmol) and potassium carbonate (20 g) in MeOH (200 mL) was heated at reflux for 10 min. The mixture was cooled to ambient temperature over 30 min, whereupon precipitation of the product was complete. The product was isolated by filtration and washed successively with 1N HCl, water and MeOH then air dried. There was obtained 13.0 g of the benzamide (mp 269.8 C.) as evident from the lack of a nitrile adsorption in the IR and the appearance of peaks at 3357.1, 3193.6 (-NH2) and 1648.7 cm-1 (H2NC(O)-); LRMS (M-NO)+ m/z=238.

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 2-Methyl-5-nitrobenzonitrile, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; DuPont Pharmaceuticals Company; US6339099; (2002); B1;,
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Adding a certain compound to certain chemical reactions, such as: 4640-67-9, name is 3-(4-Fluorophenyl)-3-oxopropanenitrile, belongs to nitriles-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 4640-67-9, Computed Properties of C9H6FNO

General procedure: 1H-Pyrazol-5-amine 1 (1 equiv.), 3-oxopropanenitrile 2 (1 equiv.), benzaldehyde 3 (1 equiv.), and Et3N (2 equiv.) were stirred in DMF (1 M) at 90 C for 16 h. The volatiles were removed under reduced pressure (or positive N2 (g) pressure). Sodium nitrite (3 equiv.) and acetic acid (134 equiv.) were added to the crude material, and the reaction mixture was stirred for 10 min. The volatiles were removed under reduced pressure (or positive N2 (g) pressure), and the crude reaction mixture was subjected to silica gel column chromatography with ethyl acetate in hexanes.

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 3-(4-Fluorophenyl)-3-oxopropanenitrile, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Hill, Matthew D.; Synthesis; vol. 48; 14; (2016); p. 2201 – 2204;,
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